Class Mammalia Linnaeus, 1758 - mammals Count: 29o;11f;21g; ‡1f Subclass Theria Parker & Haswell, 1897 Count: 28o;9f;21g; ‡1f Order Perissodactyla Owen, 1848 - odd-toed ungulates Count: [*†*] 3f;6g;16s;41ss; ‡1s;3ss 1 Family Equidae Gray, 1821 [monotypic] - horses, zebras, and asses Count: [*†*] 1g;7s;22ss; ‡1s;2ss 2 Family Tapiridae Gray, 1821 [monotypic] - tapirs Count: [*] 1g;4s;6ss 3 Family Rhinocerotidae Gray, 1821 - rhinoceroses Count: [*†*] 4g;5s;13ss; ‡1ss